Submission #799401

#	TimeUTC-0	Username	Problem	Language	Result	Execution time	Memory
799401	2023-07-31 13:51:06	future	Election Campaign (JOI15_election_campaign)	C++17	100 / 100	195 ms	32844 KiB

election_campaign

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#include <bits/stdc++.h>
using namespace std;
const int N=1e5+5;
int n,m;
vector<int>g[N];
int tab[18][N];
int depth[N];
int pos=0;
int in[N];
int out[N];
void DFS(int u,int par) {
    pos++;
    in[u]=pos;
    for(auto v:g[u])
        if(v!=par) {
            tab[0][v]=u;
            depth[v]=depth[u]+1;
            DFS(v,u);
        }
    out[u]=pos;
}
void init() {
    depth[1]=1;
    DFS(1,0);
    for(int i=1; i<=17; i++)
        for(int j=1; j<=n; j++)
            tab[i][j]=tab[i-1][tab[i-1][j]];
}
int LCA(int u,int v) {
 
 
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• Subtask 1: 10 / 10
• Subtask 2: 5 / 5
• Subtask 3: 5 / 5
• Subtask 4: 30 / 30
• Subtask 5: 10 / 10
• Subtask 6: 40 / 40